From 653a8b113a9677e534fa7061f39c7f56b3ed3663 Mon Sep 17 00:00:00 2001
From: PreslavPetrov <preslavnpetrov@gmail.com>
Date: Sat, 4 May 2024 18:41:01 +0100
Subject: [PATCH] Register the export info correctly when a global class script
 is used as the variable type for Node

---
 modules/gdscript/gdscript_parser.cpp          | 36 +++++++++++++------
 .../parser/features/export_variable.gd        |  6 ++++
 .../parser/features/export_variable.notest.gd |  2 ++
 .../parser/features/export_variable.out       |  4 +++
 4 files changed, 38 insertions(+), 10 deletions(-)
 create mode 100644 modules/gdscript/tests/scripts/parser/features/export_variable.notest.gd

diff --git a/modules/gdscript/gdscript_parser.cpp b/modules/gdscript/gdscript_parser.cpp
index 9a4c92f601d..771ccf47b75 100644
--- a/modules/gdscript/gdscript_parser.cpp
+++ b/modules/gdscript/gdscript_parser.cpp
@@ -4315,39 +4315,55 @@ bool GDScriptParser::export_annotations(const AnnotationNode *p_annotation, Node
 					return false;
 				}
 				break;
-			case GDScriptParser::DataType::CLASS:
+			case GDScriptParser::DataType::CLASS: {
+				StringName class_name;
+				if (export_type.class_type) {
+					class_name = export_type.class_type->get_global_name();
+				}
+				if (class_name == StringName()) {
+					push_error(R"(Script export type must be a global class.)", p_annotation);
+					return false;
+				}
 				if (ClassDB::is_parent_class(export_type.native_type, SNAME("Resource"))) {
 					variable->export_info.type = Variant::OBJECT;
 					variable->export_info.hint = PROPERTY_HINT_RESOURCE_TYPE;
-					variable->export_info.hint_string = export_type.to_string();
+					variable->export_info.hint_string = class_name;
 				} else if (ClassDB::is_parent_class(export_type.native_type, SNAME("Node"))) {
 					variable->export_info.type = Variant::OBJECT;
 					variable->export_info.hint = PROPERTY_HINT_NODE_TYPE;
-					variable->export_info.hint_string = export_type.to_string();
+					variable->export_info.hint_string = class_name;
 				} else {
 					push_error(R"(Export type can only be built-in, a resource, a node, or an enum.)", p_annotation);
 					return false;
 				}
+			} break;
 
-				break;
 			case GDScriptParser::DataType::SCRIPT: {
 				StringName class_name;
-				StringName native_base;
 				if (export_type.script_type.is_valid()) {
-					class_name = export_type.script_type->get_language()->get_global_class_name(export_type.script_type->get_path());
-					native_base = export_type.script_type->get_instance_base_type();
+					class_name = export_type.script_type->get_global_name();
 				}
 				if (class_name == StringName()) {
 					Ref<Script> script = ResourceLoader::load(export_type.script_path, SNAME("Script"));
 					if (script.is_valid()) {
-						class_name = script->get_language()->get_global_class_name(export_type.script_path);
-						native_base = script->get_instance_base_type();
+						class_name = script->get_global_name();
 					}
 				}
-				if (class_name != StringName() && native_base != StringName() && ClassDB::is_parent_class(native_base, SNAME("Resource"))) {
+				if (class_name == StringName()) {
+					push_error(R"(Script export type must be a global class.)", p_annotation);
+					return false;
+				}
+				if (ClassDB::is_parent_class(export_type.native_type, SNAME("Resource"))) {
 					variable->export_info.type = Variant::OBJECT;
 					variable->export_info.hint = PROPERTY_HINT_RESOURCE_TYPE;
 					variable->export_info.hint_string = class_name;
+				} else if (ClassDB::is_parent_class(export_type.native_type, SNAME("Node"))) {
+					variable->export_info.type = Variant::OBJECT;
+					variable->export_info.hint = PROPERTY_HINT_NODE_TYPE;
+					variable->export_info.hint_string = class_name;
+				} else {
+					push_error(R"(Export type can only be built-in, a resource, a node, or an enum.)", p_annotation);
+					return false;
 				}
 			} break;
 			case GDScriptParser::DataType::ENUM: {
diff --git a/modules/gdscript/tests/scripts/parser/features/export_variable.gd b/modules/gdscript/tests/scripts/parser/features/export_variable.gd
index 8b343de5ef0..483e6cab0d2 100644
--- a/modules/gdscript/tests/scripts/parser/features/export_variable.gd
+++ b/modules/gdscript/tests/scripts/parser/features/export_variable.gd
@@ -1,6 +1,8 @@
+class_name ExportVariableTest
 extends Node
 
 const Utils = preload("../../utils.notest.gd")
+const PreloadedScript = preload("./export_variable.notest.gd")
 
 # Built-in types.
 @export var test_weak_int = 1
@@ -20,6 +22,10 @@ const Utils = preload("../../utils.notest.gd")
 @export var test_image: Image
 @export var test_timer: Timer
 
+# Global custom classes.
+@export var test_global_class: ExportVariableTest
+@export var test_preloaded_script: PreloadedScript
+
 # Arrays.
 @export var test_array: Array
 @export var test_array_bool: Array[bool]
diff --git a/modules/gdscript/tests/scripts/parser/features/export_variable.notest.gd b/modules/gdscript/tests/scripts/parser/features/export_variable.notest.gd
new file mode 100644
index 00000000000..6d064351c1d
--- /dev/null
+++ b/modules/gdscript/tests/scripts/parser/features/export_variable.notest.gd
@@ -0,0 +1,2 @@
+class_name ExportPreloadedClassTest
+extends Node
diff --git a/modules/gdscript/tests/scripts/parser/features/export_variable.out b/modules/gdscript/tests/scripts/parser/features/export_variable.out
index 99d7b27130f..bb094e14b45 100644
--- a/modules/gdscript/tests/scripts/parser/features/export_variable.out
+++ b/modules/gdscript/tests/scripts/parser/features/export_variable.out
@@ -23,6 +23,10 @@ var test_image: Image = null
   hint=RESOURCE_TYPE hint_string="Image" usage=DEFAULT|SCRIPT_VARIABLE class_name=&"Image"
 var test_timer: Timer = null
   hint=NODE_TYPE hint_string="Timer" usage=DEFAULT|SCRIPT_VARIABLE class_name=&"Timer"
+var test_global_class: ExportVariableTest = null
+  hint=NODE_TYPE hint_string="ExportVariableTest" usage=DEFAULT|SCRIPT_VARIABLE class_name=&"ExportVariableTest"
+var test_preloaded_script: ExportPreloadedClassTest = null
+  hint=NODE_TYPE hint_string="ExportPreloadedClassTest" usage=DEFAULT|SCRIPT_VARIABLE class_name=&"ExportPreloadedClassTest"
 var test_array: Array = []
   hint=NONE hint_string="" usage=DEFAULT|SCRIPT_VARIABLE class_name=&""
 var test_array_bool: Array = Array[bool]([])